<?php // $Id: edit_table_save.class.php,v 1.7 2007/10/10 05:25:23 nicolasconnault Exp $

///////////////////////////////////////////////////////////////////////////
//																	   //
// NOTICE OF COPYRIGHT												   //
//																	   //
// Moodle - Modular Object-Oriented Dynamic Learning Environment		 //
//		  http://moodle.com											//
//																	   //
// Copyright (C) 1999 onwards Martin Dougiamas		http://dougiamas.com  //
//		   (C) 2001-3001 Eloy Lafuente (stronk7) http://contiento.com  //
//																	   //
// This program is free software; you can redistribute it and/or modify  //
// it under the terms of the GNU General Public License as published by  //
// the Free Software Foundation; either version 2 of the License, or	 //
// (at your option) any later version.								   //
//																	   //
// This program is distributed in the hope that it will be useful,	   //
// but WITHOUT ANY WARRANTY; without even the implied warranty of		//
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the		 //
// GNU General Public License for more details:						  //
//																	   //
//		  http://www.gnu.org/copyleft/gpl.html						 //
//																	   //
///////////////////////////////////////////////////////////////////////////

/// This class will save the changes performed to the name and comment of
/// one table

class edit_table_save extends XMLDBAction {

	/**
	 * Init method, every subclass will have its own
	 */
	function init() {
		parent::init();

	/// Set own custom attributes

	/// Get needed strings
		$this->loadStrings(array(
			'tablenameempty' => 'xmldb',
			'incorrecttablename' => 'xmldb',
			'duplicatetablename' => 'xmldb',
			'administration' => ''
		));
	}

	/**
	 * Invoke method, every class will have its own
	 * returns true/false on completion, setting both
	 * errormsg and output as necessary
	 */
	function invoke() {
		parent::invoke();

		$result = true;

	/// Set own core attributes
		$this->does_generate = ACTION_NONE;
		//$this->does_generate = ACTION_GENERATE_HTML;

	/// These are always here
		global $CFG, $XMLDB;

	/// Do the job, setting result as needed

		if (!data_submitted('nomatch')) { ///Basic prevention
			error('Wrong action call');
		}

	/// Get parameters
		$dirpath = required_param('dir', PARAM_PATH);
		$dirpath = $CFG->dirroot . stripslashes_safe($dirpath);

		$tableparam = strtolower(required_param('table', PARAM_PATH));
		$name = substr(trim(strtolower(required_param('name', PARAM_PATH))),0,28);
		$comment = required_param('comment', PARAM_CLEAN);
		$comment = stripslashes_safe($comment);

		$editeddir =& $XMLDB->editeddirs[$dirpath];
		$structure =& $editeddir->xml_file->getStructure();
		$table =& $structure->getTable($tableparam);

		$errors = array();	/// To store all the errors found

	/// Perform some checks
	/// Check empty name
		if (empty($name)) {
			$errors[] = $this->str['tablenameempty'];
		}
	/// Check incorrect name
		if ($name == 'changeme') {
			$errors[] = $this->str['incorrecttablename'];
		}
	/// Check duplicatename
		if ($tableparam != $name && $structure->getTable($name)) {
			$errors[] = $this->str['duplicatetablename'];
		}

		if (!empty($errors)) {
			$temptable = new XMLDBTable($name);
																																	  /// Prepare the output
			$site = get_site();
			$navlinks = array();
			$navlinks[] = array('name' => $this->str['administration'], 'link' => '../index.php', 'type' => 'misc');
			$navlinks[] = array('name' => 'XMLDB', 'link' => 'index.php', 'type' => 'misc');
			$navigation = build_navigation($navlinks);
			print_header("$site->shortname: XMLDB", "$site->fullname", $navigation);
			notice ('<p>' .implode(', ', $errors) . '</p>
					 <p>' . $temptable->readableInfo(),
					 'index.php?action=edit_table&amp;table=' . $tableparam . '&amp;dir=' . urlencode(str_replace($CFG->dirroot, '', $dirpath)));
			die; /// re-die :-P
		}

	/// If there is one name change, do it, changing the prev and next
	/// atributes of the adjacent tables
		if ($tableparam != $name) {
			$table->setName($name);
			if ($table->getPrevious()) {
				$prev =& $structure->getTable($table->getPrevious());
				$prev->setNext($name);
				$prev->setChanged(true);
			}
			if ($table->getNext()) {
				$next =& $structure->getTable($table->getNext());
				$next->setPrevious($name);
				$next->setChanged(true);
			}
		}

	/// Set comment
		$table->setComment($comment);

	/// Launch postaction if exists (leave this here!)
		if ($this->getPostAction() && $result) {
			return $this->launch($this->getPostAction());
		}

	/// Return ok if arrived here
		return $result;
	}
}
?>
